ci: run release workflow on push to main

Author: wrn14897

.github/workflows/release.yaml

@@ -2,8 +2,6 @@ name: Release
 on:
   push:
     branches: [main]
-  pull_request:
-    branches: [main]
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true